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Original Article
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Volume 359:2313-2323 November 27, 2008 Number 22
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Stromal Gene Signatures in Large-B-Cell Lymphomas
G. Lenz, M.D., G. Wright, Ph.D., S.S. Dave, M.D., W. Xiao, Ph.D., J. Powell, M.S., H. Zhao, M.S., W. Xu, M.S., B. Tan, M.D., N. Goldschmidt, M.D., J. Iqbal, Ph.D., J. Vose, M.D., M. Bast, B.S., K. Fu, M.D., Ph.D., D.D. Weisenburger, M.D., T.C. Greiner, M.D., J.O. Armitage, M.D., A. Kyle, Ph.D., L. May, Ph.D., R.D. Gascoyne, M.D., J.M. Connors, M.D., G. Troen, Ph.D., H. Holte, M.D., Ph.D., S. Kvaloy, M.D., Ph.D., D. Dierickx, M.D., G. Verhoef, M.D., J. Delabie, M.D., E.B. Smeland, M.D., Ph.D., P. Jares, Ph.D., A. Martinez, M.D., A. Lopez-Guillermo, M.D., E. Montserrat, M.D., E. Campo, M.D., R.M. Braziel, M.D., T.P. Miller, M.D., L.M. Rimsza, M.D., J.R. Cook, M.D., B. Pohlman, M.D., J. Sweetenham, M.D., R.R. Tubbs, M.D., R.I. Fisher, M.D., E. Hartmann, M.D., A. Rosenwald, M.D., G. Ott, M.D., H.-K. Muller-Hermelink, M.D., D. Wrench, M.D., T.A. Lister, M.D., E.S. Jaffe, M.D., W.H. Wilson, M.D., Ph.D., W.C. Chan, M.D., L.M. Staudt, M.D., Ph.D., for the Lymphoma/Leukemia Molecular Profiling Project

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 by Eng, C.

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ABSTRACT

Background The addition of rituximab to combination chemotherapy with cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP), or R-CHOP, has significantly improved the survival of patients with diffuse large-B-cell lymphoma. Whether gene-expression signatures correlate with survival after treatment of diffuse large-B-cell lymphoma is unclear.

Methods We profiled gene expression in pretreatment biopsy specimens from 181 patients with diffuse large-B-cell lymphoma who received CHOP and 233 patients with this disease who received R-CHOP. A multivariate gene-expression–based survival-predictor model derived from a training group was tested in a validation group.

Results A multivariate model created from three gene-expression signatures — termed "germinal-center B-cell," "stromal-1," and "stromal-2" — predicted survival both in patients who received CHOP and patients who received R-CHOP. The prognostically favorable stromal-1 signature reflected extracellular-matrix deposition and histiocytic infiltration. By contrast, the prognostically unfavorable stromal-2 signature reflected tumor blood-vessel density.

Conclusions Survival after treatment of diffuse large-B-cell lymphoma is influenced by differences in immune cells, fibrosis, and angiogenesis in the tumor microenvironment.


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The affiliations of the authors are listed in the Appendix.

Address reprint requests to Dr. Staudt at the Metabolism Branch, Center for Cancer Research, National Cancer Institute, Bldg. 10, Rm. 4N114, National Institutes of Health, Bethesda, MD 20892, or at lstaudt{at}mail.nih.gov.

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